Hello Great People

I'm here to take guidance from your achievements / experince.

I've around 7 yoe in IT industry. Throughout my career I'm working as a infrastructure engineer ( mainly python scripting ) , long story stort note you can called me as a seasonal software developer.

Now I want to explore my coding skills on some upper level and started reading all core concepts regarding software programming.

Can someone please guide me which online tutorial / books / blogs I should refer for DS , Algorithms , DP , Design patterns etc. before start solving problems on leetcode ? Also some tips on how to tackle software coding interviews ?

My main target is to brush up basics in depth once again.

Thanks.